On Wed, Aug 24, 2016 at 08:44:24PM +0900, Inki Dae wrote: > Hi, > > 2016년 08월 23일 18:41에 Daniel Stone 이(가) 쓴 글: > > Hi, > > > > On 22 August 2016 at 16:23, Rob Clark <robdclark@xxxxxxxxx> wrote: > >> I guess a lot comes down to 'how long before hw designers bolt a CP to > >> the thing'.. at that point, I think you especially don't want a > >> per-blit kernel interface. > > > > Regardless of whether or not we want it, we already _have_ it, in the > > form of V4L2 M2M. There are already a few IP blocks working on that, I > > believe. If V4L2 <-> KMS interop is painful, well, we need to fix that > > anyway ... > > So we are trying this. We had expereneced using V4L2 and DRM together on > Linux Platform makes it too complicated, and also integrated DRM with > M2M such as 2D and Post processor makes it simplified. So We have been > trying to move existing V4L2 based drivers into DRM excepting HW Video > Codec - called it MFC - and Camera sensor and relevant things. > I think now V4L2 and DRM frameworks may make many engineers confusing > because there are the same devices which can be controlled by V4L2 and > DRM frameworks - maybe we would need more efforts like Laurent did with > Live source[1] in the future. Can you pls explain in more detail where working with both v4l and drm drivers and making them cooperate using dma-bufs poses problems? We should definitely fix that. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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